Question

Select the correct option.

The by-product of respiration are

• A. Carbon dioxide, water and energy
• B. Water and oxygen
• C. Sugar and oxygen
• D. Oxygen and carbon dioxide

Answer 1

The correct option is A

Carbon dioxide, water and energy

The correct option is A.

Explanation of the correct answer:

1. Respiration is the process in which glucose which is present in the digested food is broken down into energy in presence of oxygen.

C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + ATP

Glucose + Oxygen → Carbon dioxide + Water + Energy

Explanation of the incorrect answer:

Option B:

Glucose will be oxidized in the presence of oxygen and Carbon dioxide is the by-product.

Option C:

Sugar and oxygen both are reactants and the by-product is carbon dioxide, water, and energy.

Option D:

Oxygen is a reactant and carbon dioxide is a by-product.

Final answer:

The by-product of respiration is carbon dioxide, water, and energy.